Help. I hate electrics.

[Moles]

Have new coil to fit to my viva. Having trouble understanding the three choices I've been given to wire it up.
1. When used to replace a standard 12v ignition 3 Ohm coil it should be wired as diagram 1
2. When used to replace a Ballast coil with external Ballast resistor use diagram 2
3. When used to replace a Ballast coil system that has built in Ballast wire. Resistor is not used, used diagram 3

My thinking is 3 until I bypass resistor wire then 2. Is this right or am I way off?
Thanks in advance Moles

[Fred Dukes]

If you have an HC the ballast resistor is built into the wiring loom.
If you have an HA or B there is a ballast resistor which goes on one coil connector and the wire from the loom goes on the other end of the resistor.
If you have electronic ignition - HA and B you do away with the ballast resistor on the coil - HC you move the wire on the bulkhead connect from D4 to D5 bypassing the resistance wire in the loom.
The coil you bought - is it "12v" for use with ballast resistor?

[Moles]

I've a Sparkright coil. That comes with a module thing that bypasses points only using them as a switch. I'd post picture but can't get it off my phone

[Fred Dukes]

sounds like you need to move the wire D4 to D5 - no doubt someone on here will tell me if its wrong

[1972nail]

viewtopic.php?f=12&t=22328

Read this....

[Moles]

So coil problem fixed. But while turning over the engine the other day I noticed smoke coming off the cable that runs from starter to solenoid. Poor earth?

[droopsnoot]

Possibly poor earth, or possibly poor connections on that cable. Worth checking all of the connections in the starter circuit and earth straps etc.